Machine for sewing plaited soles.



1. POWER Y ZABALA. MACHINE FOR SEWING PLAITED SOLES.

APPLICATION FILED IUNE 9, l9l5.

' Patented N 0v; 20, L917. 7

4 SHEETS-SHEET l.

J. POWER Y ZABALA.

'M ACHINE FOR SEWING PLAIIED SOL ES. APPLICATION F ILED JUNE 9. 1915.

,2 7, 02.. Patnted Nov. 20', 1917.

4 snscts snzzr 2.

J. POWER Y-ZABALA. MACHINEfFOR SEWING PLAITED SOLES.-

APPLICATION HLED JUNE 9,1915.

1,247,002. PatentedNov. 20', 1917.

4 SHEETS-SHEET s.

J. POWER Y ZABALA. I MACHINE FOR SEWING PLAITED SOLES.

APPLICATION FILED JUNE 'QI I915.

Patented Nov; 20, 1917. I

4 SHEETS-SHEET 4.

JOSE POWER Y ZABALA, or DUNDEE, sco' iLANn.

MACHINE FOR SEWING PLAITED SOLES.

7 Application filedJ'une 9, 1915.

To all whom it may concern:

Be it known that 1, Jose POWER Y ZABALA, of Bilbao, Spain, a subject ofthe King of Spain, residing at Viewpark, West Ferry, Dundee, Scotland,have invented new and useful Improvements in a Machine for SewingPlaited Soles, of which the following is a specification.

This invention relates to a machine for sewing plaited soles.

Large quantities of plaited soles have been sewn by hand, each solebeing first sewn transversely right through the center and then three ormore plaits are sewn together at the toe and at the heel, the sewingbeing more or less radial.

In this radial sewing the thread passes through the sole at an angle,that is the needle is inserted at one corner of the edge and comes outat the opposite face of the sole.

In my invention the toe and heel sewing is first effected andbecausesuch is the case the series of plait-s at the toe and the heel can befirmly sewn together, the sewing needle and the thread passing throughthe center of the plaits, with the result that the thread is protectedfrom wear for the longest possible period of time.

In order that my said invention and the manner of putting the same intopractice may be properly understood, I have hereunto appended fourexplanatory sheets of drawings in which the same reference numerals areused to indicate corresponding parts in the figures shown Figure 1 is aface view of the machine with the former removed.

Fig. 2 is a view looking in the direction of the arrow A (Fig. 1) thefly wheel being indicated by dotted'lines.

Fig. 3 is a plan of the 1ntermittent feed disk and shaft.

Fig. 4 is a side view of the appliance or former for holding the solewhile it is being sewn and Fig. 5 is 'a face view of same lookingfromthe right of Fig. 4:.

Fig. 6 is a part View of Fig. 1 showing the starting and stoppingmotion.

Fig. 7 is a View looking in the direction of the arrow B (Fig. 6.)

Fig. 8 is a plan.

Fig. 9 is an enlarged face view of the appliance for holding the solewhile it is being sewn.

Specification of Letters Patent.

Patented Nov. 20, 191 7.

Serial No. 33,002.

Fig. 10 is a side view of same.

Fig. 11 shows a detail, in end and in side elevation, the right handview disclosing the detail. as viewed in Fig. 2; and

- Fig. 12 shows another detail, as viewed in Fig. l.

The needle is made to reciprocate in the usual manner by means of a cam3, and cam roller 4.

The. shuttle 5 reciprocates in a path at right angles to the path of theneedle, being operated by a carrier 6 whose motion is regulated in theusual fashion by a rotatory cam 7 8 is a counterbalance weight on thecam 7. 9 1s the guide rod, 10 the cam roller and 11 a steadying guide.

The shuttle and its carrier moves in a guide 12 being located behindsaid guide and the front of the guide is behind the needle andconsequently there is anaperture 13 in the front of the guide throughwhich the loop of the needle thread can pass, in order that the shuttlecan pass through it at the correct'time.

Attached to the front. of the machine is a bracket 14. which carries thedevice for supporting the former15 and the sole 16 it carries when it isbeing sewn. This device consists of a non-rotatory slidable shaft 17whose aXis is at right angles to the face of the shuttle guide andcentral to the aperture 13 through which the needle thread loops.

The end ofrthe shaft 17 next the shuttle guide is forked; that is it isrecessed at 30 in order thatswhen it is pressed against this guide 12the needle can freely pass down through it and form the loop when it ison its return journey. f

'The shaft 17 can be drawn back clear of the needle by means of a springlever 18 being retained in that position by a side catch in the guide 19as long as is desired. a

When thus drawn back the former 15 can be slipped over and supported bythe forked end of theshaft.

The former 15 consists of a semi-circular toothed wheel 20 towhich'isfixed a guide 21, it having an open center with ratchetteeth 22on each internal face. At the other end of the guide is a similarsemi-circular wheel 23 andv this wheel can be made to slide backward andforward on the guide. Carried by this wheel are two spring pawls 2 1which can engage with the two ratchets 22 unless otherwise constrained.At the center of each wheel is a hole 25 into which the forked end ofthe supporting shaft 17 can pass in turn.

Each semi-circular wheel is mounted on and is capable of rotating on ahub 26 carrying with it the former, the wheel being re-' tained in agroove formed by a rufi 27 on the hub and situated on the one side ofthe wheel and a screwed nut 28 on the other side. This hub when mountedon its shaft 17 is retained in a fixed position by a fixed pin or key 29which is carried .by the shaft 17. The outside face of the hub has a recess corresponding to the recess 30 in the end of the shaft and theseare retained in their relative positions by the above men- 7 tioned key.The sole 16 which is tobe sewn is stretched between the two hubs andmade taut by pulling apart the slidable wheel 23, the two pawls 24.-retaining it in that position until they are released. a V

After-the former is hung on the supporting shaft 17, the spring lever 18is released thus causing the end of the shaft to move forward and bearagainst the shuttle guide 12 at the same time pressing the sole betweenthe face of the former and the face of the shuttle guide. Y

When the former is placed in position it lies at an angle, as shown inFig. 5 which is determined by means of an adjustable guide.

The operation of the stitching means, comprising the fixed guide 12, thevertically reciprocating needle 1 in front of the guide, and thehorizontally reciprocating shuttle 5 in rear of the guide, is asfollows: It will be seen from Fig. 1 that the path of the needle isacross the aperture 13 through the plate 12, the aperture thus being inposition to have the loop of thread thrown therethrough toward the pathof reciprocation of the shuttle, after the needlev starts on itsup-stroke after piercing the material to be sewn. This material is thesole 16 carried by the former 15. When the former 15 mounted on theapparatus of Figs. 1 and 2, in the relation indicated, an end party ofthe sole 16 is positioned in the path of descent of the needle, abovethe aperture13 in the guide 12. .Therefore, the needle during eachdown-stroke and following upstroke, pierces the sole 16,enters therecess 30 cut in the inner ends of thehub 26 and the shaft 17 andthereby comes opposite the aperture 13 in the guide 12,.throws itsthread loop through the aperture, and rises again to its elevatedposition after the loop is engaged by. the horizontally moving shuttle 5on the other side of the guide 12.

7 When the sole is being sewn the former and with it the sole is movedaround step by step by means of a small driving pinion 31 gearing intothe teeth of the segment.

The pinion is on the extremity of a shaft 32 and the shaft isintermittently turned by means of a star wheel 33 carried by it, the

star wheel being operated by a rotating face wheel S 1 having in it apocket 35 with angled bridge pin 86 which in its passage moves the starwheel one tooth. The length of the stitch can be varied, if desired byvarying the number of teeth in the driving pinion 31;

Eromthe foregoin it will be understood that a series of plaits can besewn together either at the toe or the heel, the radial and centralsewing commencing at one side of the sole and passing around to theother side.

In order that the machine may always stop at the same place anadjustable duplex stop motion is provided.

The machine is driven by a belt pulley 37 the pulley operating themachine through a clutch.

On a shaft 38 operated from the driving shaft by means of change gear 39(so that its rate of rotation can be altered; thus determining thenumber of stitches to be sewn) is a disk 40 in whose periphery is a gapor recess 41.

Pressing against the periphery of the disk by means of a spring 412 is aroller 43 carried by a lever at and another extremity 4 5 of this leveris coupled to anotherlever 46 on an upright shaft 17, this shaft alsocarry ing the clutch lever 18. v I 7 When the roller of the firstmentioned lever 44 falls into the gap in the disk, its movement causesthe clutch to disengage, and thus stop the machine.

In order toassist in the overcoming of the inertia of the moving parts;there is a secondary and positive stop motion. This motion consists of apin 49 which projects from the shuttle cam and which is caught at theproper moment by means of a pivoted lever 50 provided at the upperextremity with a hook 51 which may be cushioned at 52. The moment whenthe pin engages with the hook is when the needle isfully up. The hooklever is disengaged from its pin by the spring foot lever 44 at the timethis foot lever is used to disengage the lever from the gap 11 in thedisk; this movement causing the clutch to engageand the machine tooperate again. As long as the lever 44: is depressed the lever 50 isaway from thepath part of said machine for carrying said former, a hubat either end of said. former for mounting said former on said slidableshaft and means for partially rotating either end of said former aboutthe axis of the slidable shaft.

2. In a machine for sewing heel and toe portions of plaited soles, thecombination of a former upon which the plait to be sewn is wound, aslidable shaft forming part of said machine for carrying said former, ahollow hub at either end of said former for mounting said former on saidslidable shaft, a semicircular tooth wheel at either end of said formerand a shaft carried by said machine and having a tooth wheel mountedthereon for partially rotating said former.

3. In a machine for sewing heel and toe portions of plaited soles, thecombination of a former upon which the plait to be sewn is wound, aslidable shaft forming part of said machine for carrying said former, ahollow hub at either end of said former for mounting said former on saidslidable shaft, a semicircular tooth wheel at either end of said former,a shaft carried by said machine having a tooth wheel mounted thereon fordrlving said former, and means for mcreasing or decreasing the distancebetween the hubs of the former.

a. In a machine for sewing heel and toe portions of plaited soles, thecombination of a former upon which the plait to be sewn is wound, aslidable shaft mounted in a bearing on said machine for carrying saidformer, a hollow hub at either end of said former for mounting saidformer on said slidable shaft, a semicircular tooth wheel at either endof said former and a shaft carried by said machine having a tooth wheelmounted thereon for driving said former, a guide forming part of saidformer, teeth out in said guide and pawls mounted on one end of saidformer to engage said teeth for increasing or decreasing the distancebetween the hubs of the former.

5. In a machine for sewing heel and toe portions of plaited soles, thecombination of a former upon which the plait to be sewn is wound, aslidable shaft forming part of said machine for carrying said former, ashaft carried by said machine having a tooth wheel mounted thereon fordriving said former, a star wheel carried by said shaft, a rotating facewheel having in it a pocket and an angled bridge pin and carried by arotatable shaft for intermittently rotating the former.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSE POWER Y ZABALA.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

